refactor mapview tab to use controllerAs
refactor create view to use controllerAs
Merge pull request #51 from baoducng/refactor/mapviewWithControllerAs

refactor mapview tab to use controllerAs
Merge pull request #52 from baoducng/refactor/createViewWithControllerAs

Refactor/create view with controller as
(feat) Add google maps api and angular google maps scripts in index.html
(feat) Add script dependencies in index.html
(fix) Fixed google api script src
(feat) Require google-maps in app.js
(feat) Add map object to scope in marcopolo controller
(feat) Specify google map object height in css
(feat) Add google map directive to marcopolo view
(feat) Update initial coordinates to start at hack reactor